304 Mae ongl coes gyfartal dur di-staen yn ymgeisydd rhagorol ar gyfer y rhan fwyaf o dechnegau prosesu yn ogystal â chymwysiadau dan do ac awyr agored. Mae gan y cynnyrch hwn orffeniad llwyd lled-llyfn, diflas ac ymylon taprog. Mae 304 o ddur di-staen yn ddeunydd cryfder uchel gydag ymwrthedd cyrydiad rhagorol sy'n ei wneud yn ddelfrydol ar gyfer silffoedd, cromfachau, bracing, a defnyddiau pensaernïol eraill. ASTM A276-10 yw'r fanyleb safonol ar gyfer dur gwrthstaen strwythurol.
CYFANSODDIAD CEMEGOL |
|
| Elfen | Canran |
| C | 0.08 uchafswm |
| Ab | 66.34 - 74 |
| Mn | 2 uchafswm |
| Ni | 8 - 10.5 |
| P | 0.045 uchafswm |
| S | 0.03 uchafswm |
| Os | 1 max |
| Cr | 20 |
GWYBODAETH FECANYDDOL |
||
| Ymerodrol | Metrig | |
| Dwysedd | 0.289 pwys/mewn3 | 8.0 g/cc |
| Cryfder Tynnol Ultimate | 73% 2c200psi | 310 MPa |
| Cynnyrch Cryfder Tynnol | 31% 2c200psi | 276 MPa |
| Ymdoddbwynt | 2,550 - 2,651 gradd F | 1,400 - 1,455 gradd |
| Tymher | Annealed |
| Caledwch Rockwell | B70 |
| Caledwch Brinell | 123 |
MAINTIAU AR GAEL |
|||
| Maint | Trwch | Hyd | Pwysau (lbs/ft) |
| 3/4" x 3/4" x 1/8" | 1/8" | 240.00" | 0.590 |
| 1" x 1" x 1/8" | 1/8" | 240.00" | 0.800 |
| 1" x 1" x 3/16" | 3/16" | 240.00" | 1.160 |
| 1" x 1" x 1/4" | 1/4" | 240.00" | 1.490 |
| 1-1/4" x 1-1/4" x 1/8" | 1/8" | 240.00" | 1.010 |
| 1-1/4" x 1-1/4" x 3/16" | 3/16" | 240.00" | 1.479 |
| 1-1/4" x 1-1/4" x 1/4" | 1/4" | 240.00" | 1.920 |
| 1-1/2" x 1-1/2" x 1/8" | 1/8" | 240.00" | 1.230 |
| 1-1/2" x 1-1/2" x 3/16" | 3/16" | 240.00" | 1.800 |
| 1-1/2" x 1-1/2" x 1/4" | 1/4" | 240.00" | 2.340 |
| 2" x 2" x 1/8" | 1/8" | 240.00" | 1.650 |
| 2" x 2" x 3/16" | 3/16" | 240.00" | 2.439 |
| 2" x 2" x 1/4" | 1/4" | 240.00" | 3.189 |
| 2-1/2" x 2-1/2" x 3/16" | 3/16" | 240.00" | 3.069 |
| 2-1/2" x 2-1/2" x 1/4" | 1/4" | 240.00" | 4.100 |
| 3" x 2" x 1/4" | 1/4" | 240.00" | 4.100 |
| 3" x 3" x 3/16" | 3/16" | 240.00" | 3.069 |
| 3" x 3" x 1/4" | 1/4" | 240.00" | 4.899 |
| 3" x 3" x 3/8" | 3/8" | 240.00" | 7.200 |
| 4" x 4" x 1/4" | 1/4" | 240.00" | 6.600 |
| 4" x 4" x 3/8" | 3/8" | 240.00" | 9.800 |
Tagiau poblogaidd: ongl dur gwrthstaen astm a276 304, Tsieina astm a276 dur gwrthstaen ongl 304 gweithgynhyrchwyr, cyflenwyr, ffatri